Chaeles mcwilliam and emile lo isbau



(No Model) C. MQWILLIAM & E. LOISEAU.

FEEDING AIR T0 FURNACES. No. 268,423. Patented Dec. 5, 1882;

Wibiwwea fm'e n20 715.

UNITED STATES PATENT @FFICE.

. OHAELE-sMcWrLLIAM AND EMILE LOIsEAU, OE MONTEEAL,QUEBEO, OAN.

ADA, AssIeNOEs To WILLIAM ALEXANDER OAMPBELL AND GEORGE BUTTON PATTERSON, BOTH OF sAME PLAOE.

FEEDING AIR TO FURNACES.

SPECIFICATION forming part of Letters Patent No. 268,423, dated December 5, 1882.

Application filed September 15, 1882. (No model.)

To all whom it may concern Be it known that we, GHARLEs MOWILLIAM and EMILE LOISEAU, both of the city and district of Montreal, Province of Quebec, Canada, have invented certain new and useful Improvements in Apparatus for Causing More Perfect Combustion in Furnaces; and we do hereby declare that the following is a full, clear, and exact description of the same.

This invention has reference to the construction and arrangement of an apparatus by which a more perfect combustion is caused, and a consequent greater amount of heat obtained from the fuel in furnaces, caused by a blast of heated air or steam which intermingles with the products of combustion,-these being drawn from the furnace and returned to it in a heated and intermingled state.

In the drawings hereunto annexed similar letters of reference indicate like parts.

Figure 1 is a sectional plan of afurnace and apparatus embodying ourinvention. Fig. 2 is a vertical section on line mm, Fig. 1. Fig. 3 is a side elevation of Fig. 2.

Letter A is an ordinary furnace; B, the easin g or walls, also of ordinary construction. Within the furnace, and at or near the top of it, at the front end, is situated a casing, G, ex-

tending across the whole or a portion of the 0 width of the furnace. If. desired, instead of being situated at the 'front, the casing C may be placed at the side, extending preferably from the front end; but should occasion require it in any particular case it may be situated in 3 5 any position above the fire. The casing O is divided into two principal parts, D and E, the part D being a chamber extending the whole length of the casing, and the part E is divided into any desired number of chambers Gr and- 0 passages H. As shown in the drawings, them are four chambers G and three passages H. In D is situated a pipe, I, into which a blast of air or steam will be forced. This pipe is provided with nozzles K, one of which is provided for each of the passages H. The nozzles extend into the passages a distance, as shown. Each of the chambers G is provided with an opening, L, into the furnace, and an opening,

closed at pleasure by a gridiron-slide having M, into the chamber 1). The openings M are 0 dampers N, situated as shown, so that by set- S ting the slide in the position shown the four openings M are all uncovered, and by moving the slide downward (on the drawings) it will close all the openings; also, by continuing said downward motion of the slide the two open ings at the extremities will be opened and the two center ones will remain closed. This arrangement of the slide is for the purpose of enabling two or four openings to be used, as desired, or all the openings to be used with a greater or less amount of contraction of area. It will be observed that on the pipe I, preferably opposite to each of the nozzles K, tubular projections O are formed. These pass through the front of the chamber D, and

.throughthe front plate, P, of the furnace, and

extend in screwed ends in front, upon which are placed ordinary corresponding screwed nuts andcaps, B, so that by removing the caps the nozzles may be cleaned out by any ordinary means if any obstruction has lodged in them and by the nuts the pipe may be drawn up tightly, thereby raising the nozzles; or the nuts may be slackened and allow the nozzles to be slightly depressed. Thus an amount of adjustment of direction of the nozzles is provided for.

We would here remark that the whole casing 0, arranged as shown, answers also the pur- 8o pose of a fire-bridgeor fire-plate over thefront end of the furnace.

S are the ordinary fire-bars.

As shown, the chamber D terminates at both ends of the casing B, and at each end an opening, A, in the casing B is formed, so that through these openings the air can pass freely into the chamber D. Each of the openings A" will be provided with a door, damper, valve,

or slide of ordinary construction, by which go chambers, 13, situated in the front corners of the furnace. The positions and extent of these chambers are indicated in Fig. l by the diagonal dotted lines 3 The chamber D rests on these chambers B, so that by forming openings G in the bottom of D and tops of B a direct communication is formed between them and D. D are openings in the casing B, and corresponding openings are made in the sides of each chamber B, so that the air may pass freely into the chambers B. Each of the openings G and D are provided with a door, dam per, slide, or valve of ordinary construction, by which it may be wholly or partly closed.

The operation of the invention is as follows: A pressure of air or steam being provided to the pipe I, the nozzles K form a blast in the passages B. This causes an amount of exhaustion in the chamber 1). Now,ifthe damper or slide N is set to leave the whole or part of the openings M uncovered, the said exhaustion will cause a considerable amount of the products of combustion to be drawn in through the openings L into the chambers G, and

thence through the openings-M into the chamber D, where they unite with the blast of the nozzles and air and impart to said blast the heat contained in the said products of combustion.

By partially closing the openings A and M the entrance of air and products of combustion into the chamber D may be regulated to suit what is required for the amount of fuel being consumed.

The chambers B may be brought into use for causing a greater heat to the blast by simply closing the openings A and unclosing the openings 0 and D, so that the products of combustion and air are intermingled and heated within the chambers B before they pass to the chamber D.

What we claim, and wish to secure by Letters Patent, is as follows:

1. The combination of the chambers D and G, having openings or ports M and L, as shown and described, damper or valve N, passages H, and nozzles K, provided with a blast, the whole situated in the furnace above the fire, as shown or described, substantially as and for the purposes set forth.

2. The combination of the chambers B, situated as shown and described, with the chambers D and G, having openings or ports M and L, as shown and described, damper or valve N, passages H, and nozzles K, provided with a blast, the whole situated in the furnace above the fire, as shown or described, substantially as and for the purposes set forth.

CHAS. MGWILLIAM.

his E. X LOISEAU.

in ark Witnesses:

J. H. MANEN, UHAnLEs G. O. SIMPsoN. 

